CVE-2021-3722

Service interruption via misplaced installation configuration files

Published Apr 22, 2022 · Updated Aug 3, 2024

Improper permissions in Lenovo PC Manager before 4.0.40.2175 allow local users to interrupt service during installation. The installer permits configuration files to be written to non-standard locations, but Lenovo has not disclosed the responsible file-handling locus. Local access and interaction with installation are required; the reported consequence is service interruption.

CVSS severity5.0
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper permissions in Lenovo PC Manager before 4.0.40.2175 allow local users to interrupt service during installation. The installer permits configuration files to be written to non-standard locations, but Lenovo has not disclosed the responsible file-handling locus. Local access and interaction with installation are required; the reported consequence is service interruption.

The record

CVE
CVE-2021-3722
Published
Apr 22, 2022
Updated
Aug 3, 2024
Vendor
Lenovo
Product
Lenovo PC Manager
Classifications
CWE-276, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <4.0.40.2175

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Lenovo · Lenovo PC Managerversion=unspecified <4.0.40.2175

Published CVSS scores

5.0Lenovo Group Ltd.CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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